Data Sheet, Rev. 1
September 2001
R480-Type Lightwave Receiver with CML Data Output
for up to 2.488 Gbits/s Applications
Applications
s
Telecommunications:
— Inter- and intraoffice SONET/SDH
— Subscriber loop
— Metropolitan area networks
High-speed data communications
s
Description
The R480-Type 2.5 Gbits/s lightwave receiver is
designed for use in SONET and synchronous digital
hierarchy (SDH) telecommunications applications up
to OC-48 and STM-16 data rates, and high-speed
data communications applications. The receiver con-
verts received optical signals in the range of 1.2
µm
to 1.6
µm
wavelength into differential CML data out-
puts. The receiver consists of either an InGaAs APD
or PIN photodetector (depending on model selected),
a transimpedance amplifier, and a limiting amplifier
that provides differential CML data output. A TTL
compatible link status flag signal indicates when
there is a loss of optical signal.
The receiver is manufactured in a low-profile, pig-
tailed, 24-pin plastic DIP package. It requires a sin-
gle, 5.0 V power supply. The APD version has the
added benefit of containing the high-voltage supply
internal to the receiver. This internal supply also pro-
vides the necessary temperature compensation for
the APD. An analog photodetector monitor provides a
voltage proportional to the optical input level voltage
(OILV).
Manufactured in a low-profile, 24-pin package, the R480-Type
receiver features either an avalanche or PIN photodetector, a
transimpedance amplifier, and a limiting amplifier IC.
Features
s
s
s
s
s
Multisourced footprint
Internal APD bias supply
Differential CML data output
APD and PIN versions
Typical sensitivity:
—APD, –32 dBm
—PIN, –23 dBm
Operation at 1.3
µm
or 1.55
µm
TTL link status flag
Wide operating case temperature range:
—APD, 0
°C
to +85
°C
—PIN, –40
°C
to +85
°C
Space-saving, self-contained, 24-pin DIP
Agere Systems Inc. Reliability and Qualification
Program for built-in quality
SONET/SDH compatible for OC-48/STM-16 data
rate
s
s
s
s
s
s
R480-Type Lightwave Receiver with CML Data Output
for up to 2.488 Gbits/s Applications
Data Sheet, Rev. 1
September 2001
Flag Output
When the incoming optical signal falls below the link-
status switching threshold, the FLAG output is asserted
and the FLAG output logic level changes from a TTL
low to a TTL high.
Receiver Processing
The R480-Type receiver devices can withstand normal
wave-soldering processes. The complete receiver
module is not hermetically sealed; therefore, it should
not be immersed in, or sprayed with, any solutions. The
optical connector process cap deformation temperature
is 85
°C.
The receiver pins can be wave soldered at
250
°C
for 10 seconds.
Pin Information
Table 1. Pin Information
Pin
1
2
3
4
5
6
7
8
9
10
11
12
NIC*
NUC
†
LOS Flag
‡
Ground
NIC*
NIC*
Ground
V
CC
Ground
DATA
DATA
Ground
Name
Pin
24
23
22
21
20
19
18
17
16
15
14
13
NUC
†
OILV
§
V
CC
NUC
†
Ground
Ground
NIC*
Ground
Ground
Ground
Ground
NIC*
Name
Electrostatic Discharge
CAUTION: This device is susceptible to damage as
a result of electrostatic discharge (ESD).
Take proper precautions during both
handling and testing. Follow guidelines
such as JEDEC Publication No. 108-A
(Dec. 1988).
Although protection circuitry is designed into the
device, take proper precautions to avoid exposure to
ESD.
Agere Systems employs a human-body model (HBM)
for ESD-susceptibility testing and protection design
evaluation. ESD voltage thresholds are dependent on
the critical parameters used to define the model. A
standard HBM (resistance = 1.5 kΩ, capacitance =
100 pF) is widely used and, therefore, can be used for
comparison purposes.
* Pins labeled NIC have no internal connection.
† Pins designated as no user connect (NUC) are connected inter-
nally. The user should not make any connections to these pins.
‡ The loss of signal (LOS) FLAG output is a logic level that indicates
the presence or absence of a minimum acceptable level of optical
input. A TTL logic HIGH indicates the absence of a valid optical
input signal.
§ Analog optical input level voltage (OILV) is proportional to the opti-
cal input power.
Installation Considerations
Although the receiver has been designed with rugged-
ness in mind, care should be used during handling.
The optical connector should be kept free from dust.
The optical connector process cap should be kept in
place as a dust cover when the device is not connected
to a cable. If contamination is present on the optical
connector, the use of canned air with a extension tube
should remove any loose debris. Other cleaning proce-
dures are outlined in the
Cleaning Fiber Optic Assem-
blies
Technical Note (TN95-010LWP).
The cable should be handled conservatively, with no
excessive axial pulling or lateral tugging.
Handling Precautions
The R480-Type receiver is manufactured with a
39 in.
±
4 in. (100 cm
±
10 cm) single-mode or multi-
mode fiber pigtail. SC, FC/PC, LC, and MU connectors
are offered on standard versions. Other optical connec-
tor options are available on special order. Please con-
tact an Agere Systems’ Account Manager for
availability and ordering information.
The minimum fiber bending radius is 1.5 inches
(38 mm).
2
Agere Systems Inc.
Data Sheet, Rev. 1
September 2001
R480-Type Lightwave Receiver with CML Data Output
for up to 2.488 Gbits/s Applications
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Parameter
Operating Case Temperature Range:
APD
PIN
Storage Temperature
Optical Input Power—Biased:
APD
PIN
Supply Voltages
Lead Soldering Temperature/Time
Symbol
T
C
T
C
T
stg
P
IN
P
IN
V
CC
—
Min
0
–40
–40
—
—
0
—
Max
85
85
85
0
8
6.5
250/10
Unit
°C
°C
°C
dBm
dBm
V
°C/s
Characteristics
Table 2. Optical Characteristics
At 1.3
µm
wavelength and 1 x 10
–10
BER with 2
23
– 1 NRZ pseudorandom data.
Parameter
Measured Average Sensitivity:
APD
PIN
Maximum Input Power:
APD
PIN
Link Status Switching Threshold
Decreasing Light Input:
APD
PIN
Flag Response Time
Signal-Detect Hysteresis
Optical Input Level Voltage:
‡
PIN at 0 dBm
APD at –10 dBm
Reflectance:
Single-mode Fiber
Multimode Fiber
Symbol
P
MIN
P
MIN
P
MAX
P
MAX
Min*
—
—
–8
–3
Typ
†
–32
–23
—
—
Max*
–30
–21
—
—
Unit
dBm
dBm
dBm
dBm
LSTD
LSTD
t
FLAG
—
OILV
OILV
—
—
–45
–34
3
1.2
—
—
—
—
–40
–27
—
—
2.0
2.0
—
—
–35
–24
1000
—
—
—
–27
–14
dBm
dBm
µs
dB
V
V
dB
dB
* Over operating temperature range and at end of life.
† Typical values at room temperature and beginning of life.
‡ OILV measured with respect to ground.
Agere Systems Inc.
3
R480-Type Lightwave Receiver with CML Data Output
for up to 2.488 Gbits/s Applications
Data Sheet, Rev. 1
September 2001
Characteristics
(continued)
Table 3. Electrical Characteristics
Parameter
Bit Rate
dc Power Supply Voltages
Power Consumption
Output Data Voltage:
†
Single Output
Differential Output
Output Flag Voltage:
‡
High
Low
Symbol
—
V
CC
—
SV
DV
V
FOH
V
FOL
Min
100
4.75
—
0.3
0.6
2.5
0
Typ*
—
5.0
0.7
—
—
5.0
0.2
Max
2488.57
5.25
1.0
0.5
1.0
V
CC
0.8
Unit
Mbits/s
V
W
Vp-p
Vp-p
V
V
* Typical values measured at room temperature and beginning of life.
† Measured with a 50
Ω
load to ground. Outputs must be ac-coupled (see Figure 2).
‡ TTL output.
4
Agere Systems Inc.
Data Sheet, Rev. 1
September 2001
R480-Type Lightwave Receiver with CML Data Output
for up to 2.488 Gbits/s Applications
Qualification and Reliability
The R480-type receiver is scheduled to complete the following qualification tests to meet the intent of
Telcordia
Technologies
™ GR-468-CORE.
Table 4. R480 Qualification Information
Test
Reference
Conditions
Condition B
5 times/axis
500 G, 1 ms
Condition A
20 G, 20 Hz—2000 Hz
4 min./cycle
4 cycles/axis
∆T
= 100 °C
Code
Type
R485
R480
R485
R480
Sample
Pass/Fail Criteria
Size
Note
Mechanical Shock MIL-STD-883
Method 2002
Sine Vibration
MIL-STD-883
Method 2007
11
Change in Receiver Qualified by
Pieces Sensitivity: –1.5 dB T48/P172
11
Change in Receiver Qualified by
Pieces Sensitivity: –1.5 dB T48/P172
Thermal Shock
Solderability
Lead
Integrity
Solvent
Resistance
Fiber Pull
Accelerating
Aging
(HTOB)
MIL-STD-883
Method 1011
R485
R480
—
—
—
R485
R480
R485
R480
11
Pieces
—
—
—
Physical Attributes Qualified by
and Leak Check
T48/P172
—
—
—
Qualified by
T48
Qualified by
T48
Qualified by
T48
MIL-STD-883 (Package Supplier Test)
Method 2003
MIL-STD-883 (Package Supplier Test)
Method 2004
MIL-STD-883 (Package Supplier Test)
Method 2015
GR-468-CORE
Table 6
MIL-STD-883
Method 1005
1 kg; 3 times; 5 s
85 °C under bias,
2000 hours
11
Change in Receiver Qualified by
Pieces Sensitivity: –1.5 dB
P172
25
Change in Receiver Qualified by
Pieces Sensitivity: –1.5 dB T48/P172;
Refer to
Chip Data
11
Change in Receiver Qualified by
Pieces Sensitivity: –1.5 dB T48/P172
11
Change in Receiver Qualified by
Pieces Sensitivity: –1.5 dB T48/P172
11
Change in Receiver Qualified by
Pieces Sensitivity: –1.5 dB T48/P172
11
Change in Receiver Qualified by
Pieces Sensitivity: –1.5 dB T48/P172
6
Pieces
Threshold
Minimum: 500 V
—
High Temperature GR-468-CORE
Storage
Table 6
Temperature
Cycling
Temperature
Humidity Bias
Internal Water
Vapor
ESD
85 °C storage,
2000 hours
R485
R480
R485
R480
R485
R480
R485
R480
R485
R480
GR-468-CORE
–40 °C to +85 °C
Section 5.20 100 Cycles for Pass/Fail
GR-468-CORE
Table 6
MIL-STD-883
Method 1018
GR-468-CORE
Section 5.22
85 °C/85%
RH 1000 hours
5000 ppm Water Vapor
Human-Body Model
Agere Systems Inc.
5
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